Writing is described in a way designed to allow the scientist to gain control over this complex process. Procedures and standards are based upon three concepts: the feedback relationship between thinking and writing, the influence of structure on meaning, and the recognition of reading and writing as conditioned behaviors. The chapters are organized in a logical sequence, each chapter dealing with one step in the process of writing a scientific paper. Within each chapter, the problems that writers usually face at a particular stage are defined and analyzed. Tests to enable writers to evaluate their writing at each step are suggested. Exercises are provided at the end of each chapter. (Author/AA)